Artificial respirator



July 18, 1933.

B. O. JOHNSON ARTIFICIAL RESPIRATOR Filed May 31, 1929 M d. 0. B

Patente V. fThis invention first aidap-l.

pliances,

v stopped d July 18.19339 breathing apparatus. f'

-. "When a person-:is in `this conditionuit is necessary tok immediately lstartWorlgqoii him i to discharge the Watelggasespr thelike rom` the'lungs and cause fresh air to loe-thrown into the in which the rescuer alterliftly-.PlsesOWH"r `ducea simple and inexpensive device andyet,`V

same in "the endeavor to f start I the natural lfunctioning of the A*respiratpry ci? crans i i Ninn The approved and mostefficient method.A of thus applying artificial respiration is that with his hands andfreleases,suchfpressuregon 55A the back `of the-patient in .theizoneof the lungs in as closelytimed 'sequence tothe .nat-

- f uralbreathing movement organsA as possible.'

`These operations must n, bei kept upnnremittingly andwith as even pressure sired results have been attained, or thecase becomes;

and timingaspossible,until ,the` dehopeless.' i Since` resuscitation has l been effected even :aftei'fftlie patientflias .been .Worked on for severalhoursjitvvill be seen 30 thatI such tiring to the operator.` fact itis impossible or one operator to continue forsuch a period of time and it is necessary for othersito `I'e- 35 lievehiin The act long continued operations are very at intervals. i

of changing from one operator'to another requires great care and tra'ining to *accomplish eectively since any lapse. in' the properly articial Itis thereorethe main timedlsequence Vof the hand inoveapt to nulliiyk [all preyious. efforts.

respiration operations.

' object oi my .in-

' 45 vention to provide Va machine Which-,maybe easily operated by'anyperson `skilled ornot by.- means of which pressing are mechanically eiectedvvith thesame pres-yV sure. at all times, and with which it; is v ery the desired alternating and relieving actions Aon the lungs 'ofdifferentlunglspacngor depth of chest; 7 Y @Bille pressureitself 'easily 'adjusted taper- 9,5 sons of different ages,or,physicalbuildsf ;to,` p' p,

. onewhich willfbe exceedingly e ffectiveforV i rlfhese objects I accomplish ,b y means s forl cycles ofthe, A

siich structure and.relativearrangementl of,

ence A 'iiilicate vcorrespond-ing 'parts in the sev-:f eral views; y 1, fui: Y if. Eig. l is; a. Side elevation .ofmyfimproved and 'their .supporting `bar` t 6.1

ofsuitabletcharacter having corner legs :1a.

.is placed facegdown as..sfcustomarykand .of cooperating legs enables their-ame to be j* i The machiney may beloperated by power instead O Afby hand, 'l i 'A losing'a'stroke. ,i AAlfurtlrerv'iojoject is to'providean apparaj i `tus for the AlL purpose v which is of l a readily." 69@ portablelnatureso that `itA` maybeeasily, f mounted nvconiiection' withithe,patient"andA :l which may be quicklyadju'sted-gto patients suit their respectiveconditions.1 A` further object'of the inventionisto prof 70 the purposeforzwhich Vit is designed.

partsas will fully yappearby-aperusal of the following'speciication and claims; 5 i

of refer- -In the drawing Vsimilar characters Vx l l v i E. J 80k L 1 Fig ..2 vis an'jenlarged sectonalelevation Y of the Ypad actuatingstem'unit. detached. 1 Fig. 3 is atop plan view of the 'presserpads' Referring nowmore lpa ticularly to.l the" Y i charactersoftreference on thedrawing, Athe j apparatus 'comprises Va rectangular frame-1v l i ,which Sldebly eperateawth xdnlgs T23' f projecting upwardly-from a: flat base 3.v `The i legs .are setV aisuiicient: distanceapartso that j theymaystraddleth'e llicdy-ofapatientfwhoVS then restson ai supporting vpadjflanounted on 95 the base.. Catch means 5-0f suitablefcharacter and yprovidedbetween the 'different pairs .5

set abdiferentfdistances abovethe base Vas r the sizefof person` beingoperated' on gmayplio'o" require, i

Slidableinv bearing 6 mountedl on the frame a certain distance above therbase 1s a t hollow stem 7 having a cross bar 8 on its lowerend. Depending from and supported by the bar are substantially rectangular pads 9 which are shaped on their under side to substantially' conform vtothecurvature of the back of a' person in the vzone of the lungs. These pads are adjustable along the bar sov as to enable their Aspacing to be altered toVV conform to the spacing' of the lungsiof diifer` ent persons.

able abearingll supported by the' frame some-"distance, above the bearing and verti-v cally` alined therewith; Removably secured on theupper end of the. stem- 7j and'on Athe l "Stem 10 somedistance above the stem 7` butl below the bearing 11 arecollars 12 between and secured toY which extends a compression spring'l Which y'ie'ldabl'y resists depression y ofy the vstem 10 in the stem 7 .A On the upper end ofl the stem- 10 is a'roll'er 14 veng'faged by a cam 1li-mounted on a shaft'l journaled on top' of the frame l. l This camis shapedso y In operationthe frame isplaced over the` patient, whois positioned face down,vand is set' ata level such that theV pads just rest y asto depressl the! stem acertain distance (which corresponds to.` the amount of-downa ward movement of the hands when such `are used) and to then suddenly releasel the same.

Fixed'fo'n the'shaft is agear v17`meshing With'- a pinion 18 fixed on another shaft 19 which is provided. onone end with a crank handle 2() vforfthe'use of theA operator.V In certain cases, as when the device isinte'nded for hospital installation orto be used'where electricityis readilyavailab'le, 'a' motor may rbe mountedy on the framerandconnected toi'the-v shaft-16 tol drive rthe saniei Such or Vany other form of operating mechanism in 'itself however forms novpart of my invention. f

on the patient in the proper position when thestem'lO is in its uppermost position.' The crankisfthent'urned'cfausing said stem to be depressed. This acts, through the spring 13, against thelovverV stem in connection with which ,thefpad's are mounted, compressing the spring 'l somewhat and f'forcing lthepads yieldably down insimulation of the pressure i y y When the cam suddenly leaves theroller '.14 the pressure againstk the pads of the hands.

and also of course against the back of the patient is suddenly released Yand the stemlO 'raises' to its topmost position. *This action also simulates 'that of the hands when their Ydownward pressingvmovements are relieved.

If these movements are `carried out ataV properly timed sequence of fifteen `cycles or strokes Vper minute favorable results should be obtainedfif there is anyhope at all, and

Y* it' "willbe'obvious that the Yoperation of the device by turning the crank is much ymore Slidable in and projecting upwardly fromv the stem 7 is another stem 10J .which is s'lid.,

' or cani shaft and can easily carried outfeven throughl a consider-V ableY length of time than when the hands are used. It vis also much 'easier to shift from one operator'to another if necessary to relieve thefirst one without losing a` stroke.

y'Ioenable theiproper speed of reciprocaty A ing movements or strokes to begaged I preferably mount a small vertical and ytranslucent cylin-der21 in connection with the frame directly below the shaft19.Y` A vertical auger-like element 22, driven from YtheshaftV .19 bygearing 23- projects into a certainV 'l amount of oilv or other liquid carried in the cylinder. .With the4 rotation ofthe elementv 22 at a certain speed the level ofthe oil in the cylinder will be raised and'whenthey speed is such that the shaft'fl is turning iifteen Vrevolutions per minute the oil'willfthen bev atthe level of av .gage mark 24 on the cyl-y inder. The operator thus has" visual evi-1 'dencre' ofthespeed 'of 'rotation of the main govern his movements accordingly.l y v l l.

l.'.llhe'vremovability of the spring unit enables the spring to be easilyintercha'nged"V forruse l n with persons ofdiiferent ages? or physical builds, since it will-be evident that aT child or a naturally delicate or "smallperson will' notrequire a pressure-as heavy 'as an' adult *or other person of large or'normal build.

From theforegoing descriptionvit will bev readily lfseen that I have produced such Va "device vas; .substantially fulfillsl the objects of the invention' assetforth herein.

While this specification sets forth in detail thepresent'and prefer-redconstruction of the l device, still"in'practice 'such deviations'from .t such detail `may be resorted to as do'not v form a departure from thel spirit of thein vention, -as 'dened by the' 'appended claims.

f Having thus describedvmy invention what I claim 4as'new and useful and desire tesecureby Letters Patent is:

taindistancaand operating means arranged f to intermittently engagel and ,depress the second named stem and then suddenlyrelease the same; thespring wheny the pads) are` engaged with patient and the second named stem' is depressed.V`Av

2. Anartilicial respirator including spaced ,125

a patient over the lungs, a'verticalf stem from.

presser-padsl for 'engagement with the back of which ffsaid pads are supported, bearing 1. An artificial respirator includingspaced presser-pads for engagementwiththebacl Y being compressed ,only

means in which' said stem is slidable, another` stem s'lidably'l mounted Vin connection with ,A said first stem, a-compression spring about and fixed `at its ends in connection with the stems to force them 4'normally apart a certaindistance, a cam positioned'and shaped to in-A 'then suddenly re-y lease the last named stem,V and means for rotermittently depress and tating'the cam. .Y l y 3. An artificial respirator including spaced presser-pads for engagement with the back a vertical stem from which said pads are supported,- bearing of apatent over the lungs,

means in which said steniisgslidable, a comipression spring abouti said stem and secured at its lowerend thereto, andoperating `means applied to the upper end of the spring to veoV the spring.' y

laltern615fii' compress nds 'suddenly releasej;

4: An articialrespiratorineluding spaced 'L presserof a atlent over the lungs, a horizontal -barvvpads for engagementwiththe 'backf Von w ich l`.said pads are adjustably"mounted,"y

a vertical stem secured to and projecting yup-v Wardly from the bar centrally A of its length, au n compression spring bearing down at its lower endf on sald stem,y a vertloally movable inem'- ber engaging ythe upperien'd of the spring-,`

F iA

iis i f and operatlng meansfor alternatelydepress hing and suddenly releasing saidgmember. j l i u i -Y u BERNARD 0.. JOHNSONp-r 

